21838047

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 39481344

約数和(自身を除く): 17643297

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 67, 77, 83, 119, 187, 201, 231, 249, 357, 469, 561, 581, 737, 913, 1139, 1309, 1407, 1411, 1743, 2211, 2739, 3417, 3927, 4233, 5159, 5561, 6391, 7973, 9877, 12529, 15477, 15521, 16683, 19173, 23919, 29631, 37587, 38927, 46563, 61171, 87703, 94537, 108647, 116781, 183513, 263109, 283611, 325941, 428197, 661759, 1039907, 1284591, 1985277, 3119721, 7279349, 21838047]

約数ペア:

[(1, 21838047), (3, 7279349), (7, 3119721), (11, 1985277), (17, 1284591), (21, 1039907), (33, 661759), (51, 428197), (67, 325941), (77, 283611), (83, 263109), (119, 183513), (187, 116781), (201, 108647), (231, 94537), (249, 87703), (357, 61171), (469, 46563), (561, 38927), (581, 37587), (737, 29631), (913, 23919), (1139, 19173), (1309, 16683), (1407, 15521), (1411, 15477), (1743, 12529), (2211, 9877), (2739, 7973), (3417, 6391), (3927, 5561), (4233, 5159)]